The exercise in the image asks to use the number line to help find the value of $7 - 3$. Specifically, it is asking how far 3 units from 5 is in the left direction.

Here’s a step-by-step breakdown:

1. Start at 5 on the number line.
2. Move 3 units to the left (subtract 3).

• From 5, moving 3 units to the left, you reach 2.

So, the answer is 2.

Would you like more details or have any questions?

Here are 5 related questions you might consider:

1. How do you subtract larger numbers using a number line?
2. How would you add numbers on the number line instead of subtracting them?
3. What happens if you move to the right instead of the left when subtracting?
4. Can you solve $10 - 4$ using a number line?
5. How would you use a number line to solve $3 + 5$?

Tip: When using a number line, always move to the left for subtraction and to the right for addition.